Improvement in dividers



W. SMITH.

Dividers.

N015? 137, Patent ed Nov. 24,1874.

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THE GRAPHIC CO. PHOTO-UTHJSI. +l PARK PLACE N Y UNITED STATEs PATENTQEIoE.

WALTER SMITH, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN DIVIDERS.

Specification forming part of Letters Patent No. 1 57,1 37, datedNovember 24, 1874; application filed November 4, 1874.

To all whom it may concern Be it known that I, WALTER SMITH, of Bos ton,county of Suffolk, State of Massachusetts, have invented certain new anduseful Improvements in Dividers, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawing, making part of this specification, in which- Figure 1represents a perspective view of the improved dividers complete. Fig. 2is a similar View, showing one of the lugs in section and the other withthe extension-slide reversed. Fig. 3 is a transverse section through theleg and slide, and Fig. 4 is a perspective View of the extension-slidedetached.

Similar letters of reference denote corresponding parts wherever used.

The invention consists in a novel construction of. reversible leg, orextension of one of the legs, of the divider, whereby it is made tocombine a divider-point and pencil-holder with a sliding pen-holder,adapted to be used either as a circle-pen or as an ordinary writing-pen,and the whole forming a simple, cheap, and durable drafting or writinginstrument for school purposes, or for the pocket, all as hereinafterset forth.

In the accompanying drawing, A B represent the legs of the divider,united at a by the usual or any preferred construction of pivotjoint.The leg A is, by preference, made cylindrical in form, with alongitudinal slit or opening on its inner face at a, Where the edges ofthe metal forming the leg are turned inward, forming lips or flanges b,(see Fig. 3,) the opening a being of sufficient width to reeeive theU-shaped leg B when the legs A and B are folded together. Within the endof the leg A is fitted an extension leg or slide, C, Fig. 4, similar inform to the leg A, and left open on its inner face in like manner forthe folding of the leg B within it. This leg or slide 0 is made taperingin form at one end, and, like leg B, receives a fixed divider-point,

c. The opposite end 0 of this extension-leg,

forming an incomplete cylinder, as explained, is adapted to receive apencil, and within this cylindrical portion is fitted a slide, D, alsobent into curved or nearly cylindrical form, and open like the parts Aand O on its inner side, all as shown in Fig. 3, to perinit'the foldingof the leg B Within them. This slide D has a pin or spur at its innerend projecting through a slot at d in the extension-leg O, facilitatingits movement relatively to the leg or slide 0, and at its outer end isprovided with a pen-holder at D, set obliquely to or at one side of theopening or slit a, and in such relation thereto that when the point 0 ofthe leg B is set for describing a circle the pen will face the directionof movement of the leg A. Lips, as at b, are formed upon the respectiveparts for retaining the inclosed slides in proper relation to eachother, and these may be of any form suitable for that purpose.

The several parts, as described, may be struck up into the desired shapefrom any preferred metal, and the style of ornamentation may be such asis common to pocket pen and pencil holders, and which the instrumentclosely resembles when folded, with the pen withdrawn and the extensionpiece 0 inserted with the point 0 inward and inclosed by the leg A.

When the parts are in this folded position the instrument can beconveniently carried in the pocket, and, with the pen and pencil thrownout, can be used for ordinary writing purposes, as will be readilyunderstood.

A set-screw, E, applied at the joint serves to hold the legs at anydesired angle of adjustment, and also as a stem or handle for operatingthe dividers.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The combination, with the dividers, of the reversible extension leg orslide (3, provided with the fixed point e, pencil-holder O, andpen-holder slide D, constructed and operating substantially as and forthe purpose set forth.

WALTER SMITH.

Witnesses:

O. J. BAILEY, RosooE P. OWEN.

